Refrigerator



FIG. 1 is a perspective view of a refrigerator showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is right side view thereof;

FIG. 6 is a top plane view thereof; and,

FIG. 7 is a bottom view thereof. 

CLAIM The ornamental design for a refrigerator, as shown and described. 